I'm not saying dont use them, they will work fine. I'm trying to persuade the use of forscan to flatten the output of the stock head unit to that of an aftermarket. You will get a far better sounding system by doing so. Just flashing the acm to give you the flat eq curve completely changes the system in these cars. Even with factory speakers the sound is greatly improved.I was going for that route with forscan (doing research so far) but received the key amp and keyloc unexpected as a gift so I can't return it unfortunately.